/* $NetBSD: cpu.h,v 1.35 1996/05/05 19:29:26 christos Exp $ */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)cpu.h 5.4 (Berkeley) 5/9/91 */ #ifndef _I386_CPU_H_ #define _I386_CPU_H_ /* * Definitions unique to i386 cpu support. */ #include #include #include /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_swapin(p) /* nothing */ #define cpu_wait(p) /* nothing */ /* * Arguments to hardclock, softclock and statclock * encapsulate the previous machine state in an opaque * clockframe; for now, use generic intrframe. * * XXX intrframe has a lot of gunk we don't need. */ #define clockframe intrframe #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags) #define CLKF_BASEPRI(frame) ((frame)->if_ppl == 0) #define CLKF_PC(frame) ((frame)->if_eip) #define CLKF_INTR(frame) (IDXSEL((frame)->if_cs) == GICODE_SEL) /* * Preempt the current process if in interrupt from user mode, * or after the current trap/syscall if in system mode. */ int want_resched; /* resched() was called */ #define need_resched() (want_resched = 1, setsoftast()) /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the i386, request an ast to send us * through trap(), marking the proc as needing a profiling tick. */ #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) /* * Notify the current process (p) that it has a signal pending, * process as soon as possible. */ #define signotify(p) setsoftast() /* * We need a machine-independent name for this. */ #define DELAY(x) delay(x) void delay __P((int)); #ifdef I586_CPU /* * High resolution clock support (Pentium only) */ void calibrate_cyclecounter __P((void)); extern u_quad_t pentium_base_tsc; #define CPU_CLOCKUPDATE(otime, ntime) \ do { \ if (pentium_mhz) { \ __asm __volatile("cli\n" \ "movl (%3), %%eax\n" \ "movl %%eax, (%2)\n" \ "movl 4(%3), %%eax\n" \ "movl %%eax, 4(%2)\n" \ ".byte 0xf, 0x31\n" \ "sti\n" \ "#%0 %1 %2 %3" \ : "=m" (*otime), \ "=A" (pentium_base_tsc) \ : "c" (otime), "b" (ntime)); \ } \ else { \ *(otime) = *(ntime); \ } \ } while (0) #endif void delay __P((int)); /* * pull in #defines for kinds of processors */ #include struct cpu_nameclass { char *cpu_name; int cpu_class; }; #ifdef _KERNEL extern int cpu; extern int cpu_class; extern struct cpu_nameclass i386_cpus[]; #ifdef I586_CPU extern int pentium_mhz; #endif /* autoconf.c */ void configure __P((void)); /* machdep.c */ void delay __P((int)); void dumpconf __P((void)); void cpu_reset __P((void)); /* locore.s */ struct region_descriptor; void lgdt __P((struct region_descriptor *)); void fillw __P((short, void *, size_t)); short fusword __P((u_short *)); int susword __P((u_short *t, u_short)); struct pcb; void savectx __P((struct pcb *)); void switch_exit __P((struct proc *)); void proc_trampoline __P((void)); /* clock.c */ void startrtclock __P((void)); /* npx.c */ void npxdrop __P((void)); void npxsave __P((void)); #if defined(MATH_EMULATE) || defined(GPL_MATH_EMULATE) /* math_emulate.c */ int math_emulate __P((struct trapframe *)); #endif #ifdef USER_LDT /* sys_machdep.h */ void i386_user_cleanup __P((struct pcb *)); int i386_get_ldt __P((struct proc *, char *, register_t *)); int i386_set_ldt __P((struct proc *, char *, register_t *)); #endif /* isa_machdep.c */ void isa_defaultirq __P((void)); int isa_nmi __P((void)); /* vm_machdep.c */ int kvtop __P((caddr_t)); #ifdef VM86 /* vm86.c */ void vm86_gpfault __P((struct proc *, int)); #endif /* VM86 */ /* trap.c */ void child_return __P((struct proc *, struct trapframe)); #ifdef GENERIC /* swapgeneric.c */ void setconf __P((void)); #endif /* GENERIC */ #endif /* _KERNEL */ /* * CTL_MACHDEP definitions. */ #define CPU_CONSDEV 1 /* dev_t: console terminal device */ #define CPU_BIOSDEV 2 /* int: BIOS boot device */ #define CPU_BIOSGEOMETRY 3 /* int: BIOS boot device geometry */ #define CPU_CNVMEM 4 /* int: amount of conventional memory */ #define CPU_EXTMEM 5 /* int: amount of extended memory */ #define CPU_MAXID 6 /* number of valid machdep ids */ #define CTL_MACHDEP_NAMES { \ { 0, 0 }, \ { "console_device", CTLTYPE_STRUCT }, \ { "biosdev", CTLTYPE_INT }, \ { "biosgeo", CTLTYPE_INT }, \ { "cnvmem", CTLTYPE_INT }, \ { "extmem", CTLTYPE_INT }, \ } #endif /* !_I386_CPU_H_ */